如果 -LastBootupTime = -gt 10 天，则使用 powershell 重新启动计算机

Question

我正在尝试编写一个脚本来检查网络上的计算机运行了多长时间，如果它们运行超过 10 天，它们需要重新启动。我打算每周日用任务管理器自动运行脚本。

感谢@vonPryz，我现在有了这样的东西：

$clients = get-content "C:\Documents\lijstcomputers.txt"

foreach ($client in $clients) {

    if (test-connection -computername $client -BufferSize 16 -Count 1 -Quiet) {
        write-Host $client is online


        $uptime = (get-date) - (gcim Win32_OperatingSystem -computer $client).LastBootUpTime

        $startTime = [Management.ManagementDateTimeConverter]::ToDateTime((gwmi  Win32_OperatingSystem -computer $client).lastbootuptime)


        if( $uptime.days -ge 10) {
            restart-computer -computername $client
            add-content -path "c:\path\to\log.txt" -value "$client, $startTime, $uptime"
        }
    }
    else {
    write-Host $client is offline
    }
}

但是现在我收到了这个错误：

    gcim : WinRM cannot complete the operation. Verify that the specified computer name is valid, that the computer is accessible over the network, and
 that a firewall exception for the WinRM service is enabled and allows access from this computer. By default, the WinRM firewall exception for publ
ic profiles limits access to remote computers within the same local subnet.
At line:1 char:25
+ $uptime = (get-date) - (gcim Win32_OperatingSystem -computer $client).LastBootUp ...
+                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ConnectionError: (root\cimv2:Win32_OperatingSystem:String) [Get-CimInstance], CimException
    + FullyQualifiedErrorId : HRESULT 0x80338126,Microsoft.Management.Infrastructure.CimCmdlets.GetCimInstanceCommand
    + PSComputerName        : ASND0042

Cannot find an overload for "op_Subtraction" and the argument count: "2".
At line:1 char:1
+ $uptime = (get-date) - (gcim Win32_OperatingSystem -computer $client).LastBootUp ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodException
    + FullyQualifiedErrorId : MethodCountCouldNotFindBest

Answer 1

由于您已经了解了一些部分，这不仅仅是请给我 teh codez 并因此需要帮助。因此，让我们概述一下整个脚本的外观。

# Write computer names into a file, one per row for easier management
$clients = get-content "c:\ListOfComputers.txt"

foreach ($client in $clients) {
# If computer's not up, there's no need to check uptime
    if (test-connection -computername $client -BufferSize 16 -Count 1 -Quiet) {
        write-Host $client is online

        # Get uptime
        $uptime = (get-date) - (gcim Win32_OperatingSystem -computer $client).LastBootUpTime
        # Get start time
        $startTime = [Management.ManagementDateTimeConverter]::ToDateTime((gwmi  Win32_OperatingSystem -computer $client).lastbootuptime)

        # Restart the client if uptime's at least 10 days.
        if( $uptime.days -ge 10) {
            restart-computer -computername $client
        # Add client name, start date and uptime into a log file
            add-content -path "c:\path\to\log.txt" -value "$client, $startTime, $uptime"
        }
    }
    else {
    write-Host $client is offline
    }
}

可以通过添加一些错误处理以及正确的 CSV 导出来进一步改进这个框架。